“The BMD-4 features an advanced fire control system (FCS). The unique armament system provided by the Bakhcha-U and the reliable ride performance provided by the chassis gives the BMD-4 qualitatively new capabilities to units of land forces. The BMD-4 is able to fire all its primary armaments effectively regardless of whether the vehicle is stationary or mobile, whether the time is day or night, or whether it is afloat or land based. The FCS implements a significant increase of the armament effectiveness by engaging a wide scope of targets in complicated weather and landscape conditions. Advanced ballistic calculations allow the BMD-4 to fire from an enclosed position and the capability of effectively firing at low and slow aerial targets is provided.”
https://en.wikipedia.org/wiki/BMD-4
“the BMD-4 is capable of parachuting from aircraft with the entire crew and passengers inside the vehicle which allows target engagement after landing to be instant. An Il-76 is able to transport two of these vehicles at a time in comparison to three BMD-1s and BMD-2s.”
I have no idea how useful it really is nowadays given what Ukrainians use against armored vehicles.
You may as well hype the Armata T-14 - neither exist outside of a few demonstrators.
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The mass production of the modernized BMD-4 was later postponed along with the 2S25 Sprut-SD.
Nikolay Makarov, the Chief of the General Staff of Russian Armed Forces, dismissed the BMD-4 as “a version of the BMP-3” with no protection and costs more than an expensive tank.
In August 2012, Alexander Sukhorukov, who was then deputy Defense Minister, said that the BMD-4M armored vehicle does not meet the requirements put forward by the Russian military, and will not be purchased.
https://en.wikipedia.org/wiki/BMD-4